Shaker conveyer



May 11, 1943. c. A. PRATT SHAKER CONVEYER Filed Nov. 13, 1941 3 Sheets-Sheet 1 V EN TOR. Frail (AM/52s ATTORNEY May 11, 1943. c. A. PRATT SHAKER CONVEYER 3 Sheets-Sheet 3 Filed Nov. 13, 1941 Cid/4w ATTORNEY Patented May 11, 1943 UNITED s'r'rus ra'rnr QFFICE SHAKER CONVEYER Charles A. Pratt, Chicago, 111., assignor to Goodman Manufacturing Company, Chicago, 111., a corporation of Illinois Application November 13, 1941, Serial No. 418,907 6 Claims. (01. 198-220) This invention relates to improvements in shaker conveyers, and more particularly relates to an improved means for laterally moving the forward or pick-up end of a shaker conveyer so it may pick up material from various parts of i the working place of a mine.

The principal objects of my invention are to provide a new and improved means of a simplified construction, selectively operable to laterally move the pick-up end of a shaker conveyer towards either side of the working place of a mine, to position it to pick up loose material from the ground at either side of the trough line.

A more specific object of my invention is to provide a simple, efficient, and compactly arranged winding means mounted on a reciprocating trough section of a conveyer and held from reciprocable movement during reciprocation of the conveyer, for laterally swinging the pick-up end of the conveyer.

The device of my present invention operates on principlessomewhat similar to those disclosed in'Bergmann Patent No. 2,237,470, but differs therefrom in that it utilizes a winding means for laterally moving the pick-up end of the conveyer and in that the winding means is held from reciprocable movement, during reciprocation of V th conveyer.

My invention may be more clearly understood with reference to the accompanying drawings wherein:

' Figure 1 is a plan view of the loading end of a shaker conveyer trough line having a lateral swinging device constructed in accordance with my invention, associated therewith;

Figure 2 is a View in side elevation of the device shown in Figure 1, drawn to a slightly larger scale than Figure l;

Figure 3 is an enlarged detail view of the device of my invention, with certain parts shown in substantially longitudinal section;

Figure 4 is an enlarged transverse sectional View taken substantially along line 44 of Figure 1;

Figure 5 is an enlarged detail fragmentary horizontal sectional view showing certain details of the mechanism for swinging the loading end of the conveyer in one direction;

Figure 6 is a sectional view somewhat similar to Figure 5 but showing certain details of the mechanism for swinging the conveyer in an opposite direction, and taken along line 8-45 of Figure 4; and

Figure '7 is a detail fragmentary sectional view, drawn to a smaller scale than Figures 5 and 6,

looking towards the bottom of the conveyer, and showing the feeding means in a neutral position.

In the drawings, my invention is shown as being associated with the pick-up end of a shaker conveyer trough line, which includes a reciprocating trough section I0 extending forwardly from and herein shown as extending from a swivel H, about which a pick-up member or shovel I2, on the forward end of an extensible trough section l3, may swing laterally.

The swivel l I may be of an ordinary construction, such as that disclosed in a prior Patent No. 2,129,809, which issued to E. R. Bergmann on September 13, 1938, so will not herein be shown or described in detail.

The rear end of the reciprocating trough section H) is herein shown as having connection with the forward end of a trough section Hla by means of the usual connecting eyes and bolts. The rear portion of said trough section 10a is of a curved, outwardly flared formation and is adapted to be nested within a curved and flared forward end of a trough section 15, secured to the shaker conveyer pan line and reciprocably driven thereby. The trough sections H1 and i5 are pivotally connected together by means of a bearing boss I6 mounted on and projecting upwardly from a guide frame I! (see Figures 1 and 2) Said guide frame is pivotally mounted on a transverse support beam 20, for movement with respect thereto about a vertical axis coaxial with the vertical axis of said bearing boss and may be of any well known construction so is not herein shown or described in detail. Said support beam V 20 is adapted to be held in position on the ground by means of jacks, interposed between said beam and the mine roof in the usual manner.

The reciprocating trough section l 0 has a feeding mechanism generally indicated by reference character 24 projecting from the forward end thereof, which may be of a friction grip type similar to that shown and described in a prior Patent No. 2,186,472, which issued to E. R. Bergmann on January 9, 1940. Said feeding mechanism has connection with and projects forwardly from-opposite lower forward ends of a frame or bracket member 25, mounted onthe forward end of said reciprocating trough section. Extension of the extensible trough section [3 is effected by gripping said trough section during the forward strokes of the conveyer and releasing it during the return strokes of the conveyer. Retraction of said extensible trough section is effected by gripping it during the return strokes'of the conveyer and releasing it during the forward strokes of the conveyer.

The bracket member 25 extends beneath said trough section and upwardly along opposite sides thereof and is provided with a pair of parallel spaced upright side walls 26, 26, extending above and below the trough sections I and I3 and spaced laterally therefrom. Each of said side walls has mounted on the inner side thereof, a pair of vertically spaced rollers 30, 36 adapted to engage the upper and lower sides of bearing plates 3|, 3!, secured to and extending along the upper edges of said extensible trough section and to support said reciprocating trough section for movement along said extensible trough section.

The rear end of the extensible trough section i3 is mounted on a ground-engaging shoe 21, by means of a pair of parallel spaced supportin legs 28, 28, secured to and extending downwardly from the bearing plates 3|, 3| and transversely pivoted to said shoe at their lower ends.

Referring now in particular to certain of the novel features of my invention, a winding member 33, herein shown as having a flexible cable 34 wrapped therearound, is provided to laterally swing the extensible trough section l3 and shovel I2. Said cable is adapted to extend laterally in opposite directions from said winding drum and to be held in position at its ends by means of jacks 34a, 34a, engaging clamping members 34b, 34b, clamped to the free ends of said cable. Tension on said cable may be maintained by said jacks or by gripping the slack end thereof. If desired, said cable may be secured at its ends to the support beam 20, or to outboard extensions therefrom (not shown), to provide a swinging means contained within the conveyer itself.

The winding member 33, as herein shown, is freely mounted on a vertical shaft 35, and is rotatably driven in opposite directions by suitable pawl and ratchet devices which will hereinafter be more clearly described as this specification proceeds. The shaft 35 is mounted at its lower end in the bottom portion of a U-shaped frame member 38, extending longitudinally of the conveyer and secured at its upper ends to the underside of a plate 40 in a suitable manner, such as welding. Said plate is slidably guided in the underside of the bracket member 25, just beneath the reciprocating trough section [0 in facing, channelled guides 4|, 4|. Said guides depend from and are herein shown as bein formed integrally with the bottom of the bracket 25, so said bracket and reciprocating trough section may move relative to said plate and U-frame.

The plate 40 has a reduced rear end portion 43, which projects rearwardly therefrom along the bottom of said reciprocating trough section, and which has a pair of guide plates 44. 44 extending laterally from opposite sides thereof, adjacent the rear end thereof. Said guide plates are slidably mounted between a pair of laterally spaced grooved rollers 45, 45, in the grooves of said rollers (see Figures 1 and 3). Said rollers depend from the bottom of said reciprocating trough section and form an antifriction support for said last mentioned plates.

A connection is provided from the rear end of the reduced rear end portion 43 of the plate 40 to the swivel l l to hold said plate from movement during reciprocation of the conveyer, which as herein shown, includes a link 46 transversely pivoted to the rear end of the reduced portion of the plate 40 on a pivotal pin 41, mounted in a depending bracket 49. The rear end of said link is transversely pivoted to a member 50. which is mounted for lateral movement about an axis coaxial with the vertical axis of the bearing boss iii, in a manner which is not herein shown or described in detail since it is no part of my present invention.

The winding member 33 has an upstanding hub 53 to which are keyed two coaxial ratchet wheels 54 and 55. The ratchet wheels 54 and 55 are of a similar construction, but the teeth thereof are cut in opposite directions so one ratchet wheel may swing the extensible troug section in one direction and the other may swing said extensible trough section in an opposite direction.

A pawl 56 is provided to engage and rotatably move the ratchet wheel 54, while a pawl 51 is provided to engage and rotatably move the ratchet wheel 55. Said pawls are mounted on a common vertical shaft 59, for independent pivotal movement with respect thereto. The pawls 56 and 51 are provided with outwardly extending arms 60, 6| respectively, between which is interposed a compression spring 62, to urge said pawls into an engaging position with their respective ratchet wheels.

The vertical shaft 59 projects upwardly from and is mounted in an oscillating arm 63, which is mounted on the hub 53 of the winding member 33, for pivotal movement with respect thereto. The outer end of said arm is of a bifurcated formation and has a link 64 pivotally connected thereto, between the furcations thereof, by means of a pin 65. Said link extends rearwardly and angularly upwardly from said arm and is pivotally mounted at its rear end on the bottom of the reciprocating trough section 10. Thus upon reciprocable movement of the conveyer, relative movement between the reciprocating trough section In and the plate will cause the arm 63 to oscillate and engage one of the pawls 56 or 5'! with its respective ratchet wheel. to turn said ratchet wheel and the winding means 33.

wardly extending flange 69 at its upper end which is supported and guided in guide members H and Ha, secured to the bottom of the plate 40. Said guide members are in the form of segments of a circle, and form a segmental annular guide for said shield (see Figure 7).

An opening 12 is provided in the side of the shield 61, to permit the pawl 56 to extend there through and engage the ratchet wheel 54. An opening I3 is disposed above said opening 12 and spaced therefrom along the circumference of said shield, and is adapted to receive the pawl 51 and permit it to engage the teeth of the ratchet wheel 54. Said openings are so spaced that when one pawl is in an engaged position, the other engages the outer periphery of said shield and is held in a disengaged position from its respective ratchet wheel by said shield.

A hand lever 14 is provided to rotatably move said shield, to selectively disengage either one or both of the pawls 56 or 51 from their respective ratchet wheels, to control rotation of the winding member 33. A locking pin 15 is provided ad aceni; the inner end of said hand lever, for

engagement with any one of a plurality of apertures (not shown), formed in the guide member 1|, to lock said shield in its various desired ope-rative positions. I Said locking pin is operated from the outer end of saidv hand lever by means of a hand grip 76, pivoted on the under side of said hand. lever and ur ed in, a direction to hold said pin in a locking position, by means; of a spring 1-11 (see Figure 4). The connection from said hand grip to said pin includes a link 1 9, connecting said hand grip with one lever arm of a bell crank til, pivoted to the underside of said hand lever, and a pivotal connection from the other lever arm of said bell crank to the locking pin 15.

Looking pawls 8| and 82- are provided, to engage the respective ratchet wheels 54 and 55, to hold the winding member 33 from rotation when the arm 64 is moving in a return direction. Said locking pawls are pivotally mounted on a common vertical shaft 83, mounted on and depending from the plate 40, and are urged in an en gaging position by :means of a compression spring 84, engaging the inner sides of an arm 85, projecting outwardly from the pawl 8|, and an arm 85, projecting outwardly from the pawl 82. An opening 81 is provided in the shield 61, to permit the locking pawl 8| to engage the teeth of the ratchet wheel 54 and to hold said ratchet wheel from rotation in a direction opposite from the direction it is being driven by the pawl 56. Another opening 88 is provided in said shield, to permit the pawl 82 to extend therethrough and engage the teeth of the ratchet wheel 55, to hold said ratchet wheel from rotation in a direction opposite from the direction it is driven by the pawl 51.

It may be seen from the foregoing that when the cable 34 is secured at its ends and it is desired to swing the extensible trough section l3 and shovel l2 towards the right, the shield 61 is moved by the hand lever 14 to a position to permit the pawl 56 to engage with the teeth of the ratchet wheel 54, during the forward strokes of the conveyer and to be disengaged therefrom during the return strokes of the conveyer, to move said winding member in a counter-clockwise direction, step by step. When said shield is in this position, the pawl 8| will extend through the opening 8! and engage the teeth of the ratchet wheel 54 to hold said ratchet wheel from rotation in a clockwise direction during the return stroke of the arm 63.

When it is desired to swing said extensible trough section and shovel in an opposite direction, the shield 67 is moved by the hand lever 14 to the position shown in Figure 6. This disengages the pawls 55 and 8| from the teeth of the ratchet wheel 54 and causes said pawls to ride on the outer periphery of said shield. When said shield is in this position, the pawl 51 will extend through the opening 13 and be engaged with the teeth of the ratchet wheel 55 during the return strokes of the conveyer and will be disengaged therefrom during the forward strokes of the conveyer, to rotate the winding member 33 in a clockwise direction. At the same time the pawl 82 will extend through the opening 88, to hold the ratchet wheel 55 from rotation in a direction opposite from which it is driven by the pawl 51.

Movement of the shield to the position shown in Figure '7 will disengage both of said holding and said feeding pawls from their respective ratchets and will permit free rotation of said winding member.

vWhile, I. have herein shown and described one form in which my invention maybe embodied, it will be understood that; the construction thereof and the arr-angementof the various parts may be altered without departing from thespirit and scope thereof. Furthermore, I donot wish to be construed as limiting :my invention to the specific embodiment-illustrated, excepting as it may b 1 limited in the appended claims.

I claim as my invention:

1. In a shaker conveyer, a reciprocating trough section,,an extensible trough section mounted for telescopic movement, with respect to said reciprocating trough section,. means for telescopically moving said extensible trough section with respect to said reciprocating trough section, and means operated by movement of the conveyer for laterally feeding said reciprocating and extensible; trough sections including a winding member slidably mounted on said reciprocating trough section and held from reciprocable movement with said trough section, and means operatively connected with said reciprocating trough section and actuated by reciprocable movement thereof for rotatably. moving said winding member.

2. In a shaker conveyer, a reciprocating trough section, an extensible trough section mounted for telescopic movement with respect to said reciprocating trough section, means for telescopically moving said extensible trough section with respect to said reciprocating trough section, and means operated by movement of the conveyer for laterally feeding said reciprocating and extensible trough sections including a winding member slidably mounted on said reciprocating trough section and held from reciprocable movement with said trough section, a link having pivotal connection with said reciprocating trough section, and pawl and ratchet means actuated by said link and selectively operable to rotatably move said winding member.

3. In a shaker conveyer, an extensible trough section, a reciprocating trough section mounted at its forward end for reciprocable movement along said extensible trough section, a winding member for laterally moving said reciprocating and extensible trough sections, means for holding said winding member from reciprocable movement with the conveyer, means actuated by relative movement between said reciprocating trough section and winding member for rotatably driving said winding member, and a frame member mounted beneath said reciprocating trough section, for slidable movement with respect thereto, for mounting said winding member beneath said reciprocating trough section.

4. In a shaker conveyer, a reciprocating trough section, an extensible trough section, a swivel, a connection between said swivel and the rear end of said reciprocating trough section for connecting said reciprocating and extensible trough sections for lateral swinging movement about a vertical axis, and means having connection with said swivel, for laterally moving said reciprocating and extensible trough sections including a winding member slidably mounted on said reciprocating trough section, a connection between said winding member and swivel to hold said winding member from reciprocable movement with the conveyer, and pawl and ratchet means actuated by relative movement between said reciprocating trough section and said winding member, for rotatably driving said winding member.

5. In a shaker conveyer, a reciprocating trough section, an extensible trough section, a swivel, a connection between said swivel and the rear end of said reciprocating trough section for connecting said reciprocating and extensible trough sections for lateral swinging movement abo'ut a vertical axis, a frame on the forward end of said reciprocating trough section and having slidable engagement with said extensible trough section, for supporting the forward end of said'reciprocating trough section on said extensible trough section, and means for laterallyswinging said reciprocating and extensible trough sections including a winding member, a second frame form ing a mounting therefor and slidably mounted in the underside of said first mentioned frame, means connected with and actuated by said reciprocating trough section for rotatably driving said winding member, and means connecting said second frame with said swivel, for holding said second frame from reciprocable movement during reciprocable movement of said reciprocating trough section.

6. In a shaker conveyer, a reciprocating trough section, an extensible trough section, a swivel, a

connection between said swivel and the rear end ing said reciprocating andextensible trough sections for lateral swinging movement about a vertical axis, a frame on the forward end of said reciprocating trough section and having slidable engagement with said extensible trough section, for supporting the forward end of said reciprocating troughsection on said extensible trough section, and'means for laterally swinging said reciprocating and extensible trough sections including a winding member, a second frame form ing a mounting therefor and slidably mounted in the underside of said first mentioned frame, a link connecting said second frame with'said swivel, for holding said frame from reciprocable movement during reciprocable movement of said reciprocating trough section, so said reciprocat' ing trough section will move relative to said-frame during reciprocation of the conveyer, and a pawl CHARLES A. PRATT. 

